only way is to call this as an identifier.

Instead of
/test a b c 1 2 3
it would be
//noop $test(a b c,1 2 3)

The tokenize command can group them together by using something besides space as delimiter:
//tokenize 46 a b c . 1 2 3 | echo -a $1 and $2
however as soon as you called your test alias as a /command
//tokenize 46 a b c . 1 2 3 | /test $1 $2
... then your /test alias would not retain the original definition of $1